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736 lines
16 KiB
736 lines
16 KiB
/*
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*
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* kStart OpenGL screensave for KDE
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*
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* $Id$
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*
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* Copyright (C) 1998 Bernd Johannes Wuebben
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* wuebben@math.cornell.edu
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Based on star.c:
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*
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* Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that (i) the above copyright notices and this permission notice appear in
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* all copies of the software and related documentation, and (ii) the name of
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* Silicon Graphics may not be used in any advertising or
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* publicity relating to the software without the specific, prior written
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* permission of Silicon Graphics.
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*
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* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF
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* ANY KIND,
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* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*
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* IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR
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* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#define LONG64
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//#define TQT_CLEAN_NAMESPACE
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#include <tqslider.h>
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#include <tqlayout.h>
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#include <kglobal.h>
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#include <kconfig.h>
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#include <krandomsequence.h>
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#include <kdebug.h>
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#include "xlock.h"
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#include "helpers.h"
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#ifdef HAVE_CONFIG_H
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#include "../../config.h"
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#endif
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#ifdef HAVE_GL
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#include <klocale.h>
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#undef index
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#include "space.h"
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#include <math.h>
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#include <X11/Intrinsic.h>
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#ifdef HAVE_GL_XMESA_H
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#include <GL/xmesa.h>
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#endif
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#include <GL/gl.h>
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#include <GL/glx.h>
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#ifdef HAVE_GL_GLUT_H
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// We don't need GLUT, but some BROKEN GLU implemenations, such as the one
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// used in SuSE Linux 6.3, do. :(
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#include <GL/glut.h>
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#endif
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#include <GL/glu.h>
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#ifndef PI
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#ifdef M_PI
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#define PI M_PI
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#else
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#define PI 3.141592657
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#endif
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#endif
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enum {
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NORMAL = 0,
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WEIRD = 1
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} flag = NORMAL;
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enum {
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STREAK = 0,
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CIRCLE = 1
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};
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#define MAXSTARS 400
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#define MAXPOS 10000
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#define MAXWARP1 10
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#define MAXANGLES 6000
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typedef struct _starRec {
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GLint type;
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float x[2], y[2], z[2];
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float offsetX, offsetY, offsetR, rotation;
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} starRec;
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GLenum doubleBuffer, directRender;
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GLint windW, windH;
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GLint starCount = MAXSTARS / 2;
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float speed = 1.0;
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float warpinterval = 30000.0;
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GLint nitro = 0;
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starRec stars[MAXSTARS];
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float sinTable[MAXANGLES];
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static GLXContext glx_context;
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static KRandomSequence *rnd = 0;
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float Sin(float angle)
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{
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return (sinTable[(GLint)angle]);
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}
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float Cos(float angle)
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{
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return (sinTable[((GLint)angle+(MAXANGLES/4))%MAXANGLES]);
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}
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void NewStar(GLint n, GLint d)
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{
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if (rnd->getLong(4) == 0) {
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stars[n].type = CIRCLE;
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} else {
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stars[n].type = STREAK;
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}
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stars[n].x[0] = rnd->getDouble() * MAXPOS - MAXPOS / 2;
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stars[n].y[0] = rnd->getDouble() * MAXPOS - MAXPOS / 2;
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stars[n].z[0] = rnd->getDouble() * MAXPOS + d;
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if (rnd->getLong(4) == 0 && flag == WEIRD) {
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stars[n].offsetX = rnd->getDouble()* 100 - 100 / 2;
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stars[n].offsetY = rnd->getDouble()* 100 - 100 / 2;
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stars[n].offsetR = rnd->getDouble()* 25 - 25 / 2;
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} else {
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stars[n].offsetX = 0.0;
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stars[n].offsetY = 0.0;
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stars[n].offsetR = 0.0;
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}
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}
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void RotatePoint(float *x, float *y, float rotation)
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{
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float tmpX, tmpY;
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tmpX = *x * Cos(rotation) - *y * Sin(rotation);
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tmpY = *y * Cos(rotation) + *x * Sin(rotation);
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*x = tmpX;
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*y = tmpY;
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}
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void MoveStars(void)
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{
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float offset;
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GLint n;
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offset = speed * 60.0;
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for (n = 0; n < starCount; n++) {
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stars[n].x[1] = stars[n].x[0];
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stars[n].y[1] = stars[n].y[0];
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stars[n].z[1] = stars[n].z[0];
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stars[n].x[0] += stars[n].offsetX;
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stars[n].y[0] += stars[n].offsetY;
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stars[n].z[0] -= offset;
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stars[n].rotation += stars[n].offsetR;
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if (stars[n].rotation > MAXANGLES) {
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stars[n].rotation = 0.0;
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}
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}
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}
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GLenum StarPoint(GLint n)
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{
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float x0, y0, x1, y1, width;
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GLint i;
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x0 = stars[n].x[0] * windW / stars[n].z[0];
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y0 = stars[n].y[0] * windH / stars[n].z[0];
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RotatePoint(&x0, &y0, stars[n].rotation);
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x0 += windW / 2.0;
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y0 += windH / 2.0;
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if (x0 >= 0.0 && x0 < windW && y0 >= 0.0 && y0 < windH) {
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if (stars[n].type == STREAK) {
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x1 = stars[n].x[1] * windW / stars[n].z[1];
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y1 = stars[n].y[1] * windH / stars[n].z[1];
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RotatePoint(&x1, &y1, stars[n].rotation);
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x1 += windW / 2.0;
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y1 += windH / 2.0;
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glLineWidth(MAXPOS/100.0/stars[n].z[0]+1.0);
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glColor3f((MAXWARP1-speed)/MAXWARP1, (MAXWARP1-speed)/MAXWARP1, .9);
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if (fabs(x0-x1) < 1.0 && fabs(y0-y1) < 1.0) {
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glBegin(GL_POINTS);
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glVertex2f(x0, y0);
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glEnd();
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} else {
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glBegin(GL_LINES);
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glVertex2f(x0, y0);
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glVertex2f(x1, y1);
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glEnd();
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}
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} else {
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width = MAXPOS / 10.0 / stars[n].z[0] + 1.0;
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glColor3f(1.0, 0.0, 0.0);
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glBegin(GL_POLYGON);
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for (i = 0; i < 8; i++) {
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float x = x0 + width * Cos((float)i*MAXANGLES/8.0);
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float y = y0 + width * Sin((float)i*MAXANGLES/8.0);
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glVertex2f(x, y);
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};
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glEnd();
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}
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return GL_TRUE;
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} else {
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return GL_FALSE;
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}
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}
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void ShowStars(void)
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{
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GLint n;
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glClear(GL_COLOR_BUFFER_BIT);
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for (n = 0; n < starCount; n++) {
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if (stars[n].z[0] > speed || (stars[n].z[0] > 0.0 && speed < MAXWARP1)) {
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if (StarPoint(n) == GL_FALSE) {
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NewStar(n, MAXPOS);
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}
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} else {
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NewStar(n, MAXPOS);
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}
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}
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}
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static void Init(void)
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{
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float angle;
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GLint n;
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for (n = 0; n < MAXSTARS; n++) {
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NewStar(n, 100);
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}
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angle = 0.0;
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for (n = 0; n < MAXANGLES ; n++) {
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sinTable[n] = sin(angle);
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angle += PI / (MAXANGLES / 2.0);
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}
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glClearColor(0.0, 0.0, 0.0, 0.0);
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glDisable(GL_DITHER);
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}
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void retqshape(int width, int height)
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{
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windW = (GLint)width;
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windH = (GLint)height;
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glViewport(0, 0, windW, windH);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluOrtho2D(-0.5, windW+0.5, -0.5, windH+0.5);
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glMatrixMode(GL_MODELVIEW);
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}
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void Idle(void)
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{
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MoveStars();
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ShowStars();
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if (nitro > 0) {
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speed = (float)(nitro / 10) + 1.0;
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if (speed > MAXWARP1) {
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speed = MAXWARP1;
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}
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if (++nitro > MAXWARP1*10) {
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nitro = -nitro;
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}
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} else if (nitro < 0) {
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nitro++;
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speed = (float)(-nitro / 10) + 1.0;
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if (speed > MAXWARP1) {
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speed = MAXWARP1;
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}
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}
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glFlush();
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/* if (doubleBuffer) {
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tkSwapBuffers();
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}*/
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}
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void
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drawSpace(Window /*window*/)
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{
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/*
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Display *display = dsp;
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//glXMakeCurrent(display, window, mp->glx_context);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glFlush();
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glXSwapBuffers(display, window);
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*/
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Idle();
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}
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void release_Space(){
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glXDestroyContext(dsp, glx_context);
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}
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static XVisualInfo *glVis[MAXSCREENS];
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int
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getVisual(XVisualInfo * wantVis, int visual_count)
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{
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Display *display = dsp;
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static int first;
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int i;
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if (first) {
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for (screen = 0; screen < MAXSCREENS; screen++)
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glVis[screen] = NULL;
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}
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if (!glVis[screen]) {
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if (mono) {
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/* Monochrome display - use color index mode */
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int attribList[] = {GLX_DOUBLEBUFFER, None};
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glVis[screen] = glXChooseVisual(display, screen, attribList);
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} else {
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int attribList[] =
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{GLX_RGBA, GLX_DOUBLEBUFFER, GLX_DEPTH_SIZE, 1, None};
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glVis[screen] = glXChooseVisual(display, screen, attribList);
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}
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}
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// Make sure we have a visual
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if (!glVis[screen]) {
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return (0);
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}
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/* check if GL can render into root window. */
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for(i=0;i<visual_count;i++)
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if ( (glVis[screen]->visual == (wantVis+i)->visual) )
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return (1); // success
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// The visual we received did not match one we asked for
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return (0);
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}
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void
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initSpace(Window window)
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{
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Display *display = dsp;
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XWindowAttributes xwa;
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(void) XGetWindowAttributes(dsp, window, &xwa);
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int n;
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XVisualInfo *wantVis, vTemplate;
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int VisualClassWanted=-1;
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vTemplate.screen = screen;
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vTemplate.depth = xwa.depth;
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if (VisualClassWanted == -1) {
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vTemplate.c_class = DefaultVisual(display, screen)->c_class;
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} else {
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vTemplate.c_class = VisualClassWanted;
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}
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wantVis = XGetVisualInfo(display,
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VisualScreenMask | VisualDepthMask | VisualClassMask,
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&vTemplate, &n);
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if (VisualClassWanted != -1 && n == 0) {
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/* Wanted visual not found so use default */
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vTemplate.c_class = DefaultVisual(display, screen)->c_class;
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|
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wantVis = XGetVisualInfo(display,
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VisualScreenMask | VisualDepthMask | VisualClassMask,
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&vTemplate, &n);
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}
|
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/* if User asked for color, try that first, then try mono */
|
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/* if User asked for mono. Might fail on 16/24 bit displays,
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so fall back on color, but keep the mono "look & feel". */
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|
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if (!getVisual(wantVis, n)) {
|
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if (!getVisual(wantVis, n)) {
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kdError() << i18n("GL can not render with root visual\n") << endl;
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return;
|
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}
|
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}
|
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|
|
/* PURIFY 3.0a on SunOS4 reports a 104 byte memory leak on the next line each
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* time that morph3d mode is run in random mode. */
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|
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glx_context = glXCreateContext(display, wantVis, 0, True);
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|
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XFree((char *) wantVis);
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|
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glXMakeCurrent(display, window, glx_context);
|
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glDrawBuffer(GL_FRONT);
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|
|
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if (mono) {
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glIndexi(WhitePixel(display, screen));
|
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glClearIndex(BlackPixel(display, screen));
|
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}
|
|
|
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retqshape(xwa.width, xwa.height);
|
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Init();
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif
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|
|
|
#define MINSPEED 1
|
|
#define MAXSPEED 100
|
|
#define DEFSPEED 50
|
|
#define MINWARP 1
|
|
#define MAXWARP 30
|
|
#define DEFWARP 2
|
|
#define WARPFACTOR 100
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#include <tqpushbutton.h>
|
|
#include <tqcheckbox.h>
|
|
#include <tqlabel.h>
|
|
#include <tqcolor.h>
|
|
|
|
#include <kmessagebox.h>
|
|
|
|
#include "space.moc"
|
|
|
|
#undef Below
|
|
|
|
static kSpaceSaver *saver = NULL;
|
|
|
|
void startScreenSaver( Drawable d )
|
|
{
|
|
if ( saver )
|
|
return;
|
|
saver = new kSpaceSaver( d );
|
|
}
|
|
|
|
void stopScreenSaver()
|
|
{
|
|
if ( saver )
|
|
delete saver;
|
|
saver = NULL;
|
|
}
|
|
|
|
int setupScreenSaver()
|
|
{
|
|
kSpaceSetup dlg;
|
|
|
|
return dlg.exec();
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
kSpaceSaver::kSpaceSaver( Drawable drawable ) : kScreenSaver( drawable )
|
|
{
|
|
rnd = new KRandomSequence();
|
|
readSettings();
|
|
counter = (int)warpinterval *WARPFACTOR;
|
|
|
|
colorContext = TQColor::enterAllocContext();
|
|
|
|
initXLock( mGc );
|
|
initSpace( mDrawable );
|
|
|
|
timer.start( speed );
|
|
connect( &timer, TQT_SIGNAL( timeout() ), TQT_SLOT( slotTimeout() ) );
|
|
}
|
|
|
|
kSpaceSaver::~kSpaceSaver()
|
|
{
|
|
timer.stop();
|
|
release_Space();
|
|
TQColor::leaveAllocContext();
|
|
TQColor::destroyAllocContext( colorContext );
|
|
delete rnd; rnd = 0;
|
|
}
|
|
|
|
void kSpaceSaver::setSpeed( int spd )
|
|
{
|
|
timer.stop();
|
|
speed = MAXSPEED - spd ;
|
|
// printf("speed %d\n",speed);
|
|
timer.stop();
|
|
timer.start( speed );
|
|
}
|
|
|
|
void kSpaceSaver::setWarp( int w )
|
|
{
|
|
warpinterval = w;
|
|
counter = (int)warpinterval;
|
|
initSpace( mDrawable );
|
|
}
|
|
|
|
void kSpaceSaver::readSettings()
|
|
{
|
|
KConfig *config = klock_config();
|
|
config->setGroup( "Settings" );
|
|
|
|
TQString str;
|
|
|
|
str = config->readEntry( "Speed" );
|
|
if ( !str.isNull() )
|
|
speed = MAXSPEED - str.toInt();
|
|
else
|
|
speed = DEFSPEED;
|
|
|
|
warpinterval = config->readNumEntry( "WarpInterval", 15 );
|
|
delete config;
|
|
}
|
|
|
|
void kSpaceSaver::slotTimeout()
|
|
{
|
|
//printf("%d %d \n",(int)warpinterval, MAXWARP);
|
|
if(warpinterval != MAXWARP){
|
|
if(nitro == 0)
|
|
counter -= speed +1;
|
|
|
|
if(counter <= 0){
|
|
nitro = 1;
|
|
counter = (int) warpinterval *WARPFACTOR;
|
|
}
|
|
}
|
|
else
|
|
nitro = 0;
|
|
|
|
drawSpace( mDrawable );
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
kSpaceSetup::kSpaceSetup( TQWidget *parent, const char *name )
|
|
: KDialogBase( parent, name, true, i18n("Setup Space Screen Saver"),
|
|
Ok|Cancel|Help, Ok, true )
|
|
{
|
|
setButtonText( Help, i18n( "A&bout" ) );
|
|
readSettings();
|
|
|
|
TQWidget *page = new TQWidget( this );
|
|
setMainWidget( page );
|
|
TQHBoxLayout *hb = new TQHBoxLayout( page, 0, spacingHint() );
|
|
TQVBoxLayout *vb = new TQVBoxLayout( hb, spacingHint() );
|
|
|
|
TQLabel *label;
|
|
TQSlider *slider;
|
|
|
|
label = new TQLabel( i18n("Speed:"), page );
|
|
vb->addWidget( label );
|
|
|
|
slider = new TQSlider(MINSPEED, MAXSPEED, 10, speed, Qt::Horizontal,
|
|
page );
|
|
vb->addWidget( slider );
|
|
slider->setTickmarks(TQSlider::Below);
|
|
slider->setTickInterval(10);
|
|
connect( slider, TQT_SIGNAL( valueChanged( int ) ), TQT_SLOT( slotSpeed( int ) ) );
|
|
|
|
label = new TQLabel( i18n("Warp interval:"), page );
|
|
vb->addWidget( label );
|
|
|
|
slider = new TQSlider(MINWARP, MAXWARP, 3, warpinterval,Qt::Horizontal, page );
|
|
vb->addWidget( slider );
|
|
slider->setTickmarks(TQSlider::Below);
|
|
slider->setTickInterval(3);
|
|
connect( slider, TQT_SIGNAL( valueChanged( int ) ), TQT_SLOT( slotWarp( int ) ) );
|
|
|
|
vb->addStrut( 150 );
|
|
vb->addStretch();
|
|
|
|
preview = new TQWidget( page );
|
|
hb->addWidget( preview );
|
|
preview->setFixedSize( 220, 170 );
|
|
preview->setBackgroundColor( black );
|
|
preview->show(); // otherwise saver does not get correct size
|
|
saver = new kSpaceSaver( preview->winId() );
|
|
}
|
|
|
|
void kSpaceSetup::readSettings()
|
|
{
|
|
KConfig *config = klock_config();
|
|
config->setGroup( "Settings" );
|
|
|
|
speed = config->readNumEntry( "Speed", speed );
|
|
|
|
if ( speed > MAXSPEED )
|
|
speed = MAXSPEED;
|
|
else if ( speed < MINSPEED )
|
|
speed = MINSPEED;
|
|
|
|
warpinterval = config->readNumEntry( "WarpInterval", 15 );
|
|
|
|
delete config;
|
|
}
|
|
|
|
void kSpaceSetup::slotSpeed( int num )
|
|
{
|
|
speed = num ;
|
|
|
|
if ( saver )
|
|
saver->setSpeed( speed );
|
|
}
|
|
|
|
void kSpaceSetup::slotWarp( int num )
|
|
{
|
|
warpinterval = num;
|
|
if ( saver )
|
|
saver->setWarp( warpinterval );
|
|
}
|
|
|
|
void kSpaceSetup::slotOk()
|
|
{
|
|
KConfig *config = klock_config();
|
|
config->setGroup( "Settings" );
|
|
|
|
TQString sspeed;
|
|
sspeed.setNum( speed );
|
|
config->writeEntry( "Speed", sspeed );
|
|
|
|
TQString interval;
|
|
interval.setNum( (int)warpinterval );
|
|
config->writeEntry( "WarpInterval", interval );
|
|
|
|
config->sync();
|
|
delete config;
|
|
accept();
|
|
}
|
|
|
|
void kSpaceSetup::slotHelp()
|
|
{
|
|
KMessageBox::about(this,
|
|
i18n("KSpace\nCopyright (c) 1998\n"
|
|
"Bernd Johannes Wuebben <wuebben@kde.org>"));
|
|
}
|
|
|
|
|
|
/*
|
|
static GLenum Args(int argc, char **argv)
|
|
{
|
|
GLint i;
|
|
|
|
doubleBuffer = GL_FALSE;
|
|
directRender = GL_TRUE;
|
|
|
|
for (i = 1; i < argc; i++) {
|
|
if (strcmp(argv[i], "-sb") == 0) {
|
|
doubleBuffer = GL_FALSE;
|
|
} else if (strcmp(argv[i], "-db") == 0) {
|
|
doubleBuffer = GL_TRUE;
|
|
} else if (strcmp(argv[i], "-dr") == 0) {
|
|
directRender = GL_TRUE;
|
|
} else if (strcmp(argv[i], "-ir") == 0) {
|
|
directRender = GL_FALSE;
|
|
}
|
|
}
|
|
return GL_TRUE;
|
|
}
|
|
|
|
|
|
|
|
void main(int argc, char **argv)
|
|
{
|
|
GLenum type;
|
|
|
|
if (Args(argc, argv) == GL_FALSE) {
|
|
tkQuit();
|
|
}
|
|
|
|
windW = 300;
|
|
windH = 300;
|
|
tkInitPosition(0, 0, 300, 300);
|
|
|
|
type = TK_RGB;
|
|
type |= (doubleBuffer) ? TK_DOUBLE : TK_SINGLE;
|
|
type |= (directRender) ? TK_DIRECT : TK_INDIRECT;
|
|
tkInitDisplayMode(type);
|
|
|
|
if (tkInitWindow("Stars") == GL_FALSE) {
|
|
tkQuit();
|
|
}
|
|
|
|
Init();
|
|
|
|
tkExposeFunc(Retqshape);
|
|
tkRetqshapeFunc(Retqshape);
|
|
tkKeyDownFunc(Key);
|
|
tkIdleFunc(Idle);
|
|
tkExec();
|
|
}
|
|
|
|
*/
|